@misc{10481/83915,
year = {2023},
month = {6},
url = {https://hdl.handle.net/10481/83915},
abstract = {Following defocused ion beam sputtering, large area highly corrugated and faceted nanoripples
are formed on calcite (10.4) faces in a self-organized fashion. High resolution atomic force
microscopy (AFM) imaging reveals that calcite ripples are defined by facets with highly kinked
(11.0) and (21.12) terminations. In situ AFM imaging during the exposure of such modified
calcite surfaces to PbCl2 aqueous solution reveals that the nanostructured calcite surface
promotes the uptake of Pb. In addition, we observed the progressive smoothing of the highly
reactive calcite facet terminations and the formation of Pb-bearing precipitates elongated in
registry with the underlying nanopattern. By SEM–EDS analysis we quantified a remarkable
500% increase of the Pb uptake rate, up to 0.5 atomic weight % per hour, on the nanorippled
calcite in comparison to its freshly cleaved (10.4) surfaces. These results suggest that
nanostructurated calcite surfaces can be used for developing future systems for lead sequestration
from polluted waters.},
organization = {Universidad Técnica de Ambato},
organization = {Juan de la
Cierva-Formación postdoctoral contract (ref. FJC2018–035820-
I)},
organization = {Spanish Ministry of Science},
organization = {Ministero dell’Università e della Ricerca
(MUR)},
organization = {National Recovery and
Resilience Plan (NRRP)},
organization = {Mission 4 Component 2 Investment
1.3 - Call for tender No. 1561 of 11.10.2022},
organization = {The
European Union – NextGenerationEU • Award Number: Project
code PE0000021},
organization = {Concession Decree No. 1561 of 11.10.2022
adopted by Ministero dell’Università e della Ricerca (MUR)},
organization = {CUP D33C22001300002 Project title “Network 4 Energy Sustainable
Transition – NEST”. FBdM acknowledges support by
UNIGE in the framework of BIPE2020 program and technical
support},
publisher = {IOPScience},
keywords = {Nanopatterning},
keywords = {Ion beam sputtering},
keywords = {Ion bombardment},
keywords = {Water purification},
keywords = {Atomic force microscopy},
title = {Highly efficient sequestration of aqueous lead on nanostructured calcite substrates},
doi = {10.1088/1361-6528/acdbd4},
author = {Barelli, Matteo and Pimentel, Carlos},
}